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- W64173863 abstract "0556-2821=20 Here we study the effect of the nonminimal coupling j @ A on the static potential in multiflavor QED3. Both cases of four and two components fermions are studied separately at leading order in the 1=N expansion. Although a nonlocal Chern-Simons term appears, in the four components case the photon is still massless leading to a confining logarithmic potential similar to the classical one. In the two components case, as expected, the parity breaking fermion mass term generates a traditional Chern-Simons term which makes the photon massive and we have a screening potential which vanishes at large intercharge distance. The extra nonminimal couplings have no important influence on the static potential at large intercharge distances. However, interesting effects show up at finite distances. In particular, for strong enough nonminimal coupling we may have a new massive pole in the photon propagator, while in the opposite limit there may be no poles at all in the irreducible case. We also found that, in general, the nonminimal couplings lead to a finite range repulsive force between charges of opposite signs." @default.
- W64173863 created "2016-06-24" @default.
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- W64173863 date "2004-01-01" @default.
- W64173863 modified "2023-10-03" @default.
- W64173863 title "Static potential in QED3 with nonminimal coupling" @default.
- W64173863 hasPublicationYear "2004" @default.
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